Oil-well pump.



PATENTED NOV. 5, 1907.

G. F. BELL. OIL WELL PUMP.

APPLIGATION FILED JULY 2a. 1906.

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PATLNTED Nov. 5, 1907. G. F. BELL. OIL WELL PUMP.

APPLICATION FILED JULY 23. 1906.

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GEORGE F. BELL, OF SISTERSVILLE, WEST VIRGINIA.

OIL-WELL PUMP Speeieaton of Letters Patent.

Patented Nov. 5, 1907.

Application filed July 23.1906. Serial No. 327.335.

To all whom it may concern:

Be it known that I, GEORGE F. BELL, a citizen of the United States, residing at Sistersville, in the county of Tyler and State of West Virginia, have invented a new and useful Oil-Well Pump, ol which the following is a specification.

The invention relates to improvements in oil well pumps.

The object oi the present invention is to improve the construction of oil well pumps, more especially that class of pumps in which the sucker rods are dispensed with and a spring is employed for actuating the plunger on the down stroke.

A further object of the invention is to provide an oil well pump of this character, having means for detachably anchoring the reciprocating parts within an oil well tube, and for enabling all of the apparatus to be keasily and quickly removed from the oil well tube when desired.

With these and other objects in View, the invention consists in the construction and novel combination oi parts hereinafter fully described, illustrated in the accompanyingdrawings, and pointed out in the claims hereto appended; it being understood that various changes in the iorm, proportion, size and minor details oi construction, within the scope of the claims, may be resorted to without departing from the spirit or 'sacricing any of the advantages of the invention.

In the drawingsz-Figure l is a side elevation oi a portion oi an oil well pump, constructed in accordance with this invention, the oil well tube being in section and the parts being arranged for operation. Fig. 2 is an enlarged sectional view, illustrating the construction for detachably anchoring the apparatus within the oil well tube. Fig. 3 is a similar view, the parts being unlocked. Fig. 4 is an elevation, the parts being arranged as shown in Fig. 3, and the hook of the upper jar or member being in section. Fig. 5 is a'detail View ofthe upper jar or member. Fig. 6 is a similar view of the lower jar or member. Fig. 7 is a detail view of the head, which is anchored to the oil tube. Fig. 8 is a sectional view on the line 8 8 ofFig. 7. Fig. 9 is a plan view of the head shown in Fig. 7. Fig. l0 is an enlarged sectional view of a portion of the pump, illustrating the construction oi the coupling member which forms a seat for the spring. Fig. ll is a sectional view on the line ll-ll of Fig. l0.

Like numerals ol' reference designate corresponding parts in all the figures oi the drawings.

l designates an upper jar or member, which is designed to be connected with the ordinary reciprocating cable or wire line (not shown), and which is slidably connected with a lower jar or member 2 'in the usual The upper and lower jars or members are in the orm of links, the upper end of the lower jar or member being linked into the opening oi the upper jar or member, which is provided with a depending extension 3, located within the opening of the lower'jar or member 2. The depending extension 3, which has a lower tapered portion, is provided at one side with an inclined edge 4, and it is recessed above the latter to provide a projecting bill to form a hook 5 for engaging a loop 6 of a wedge 7. The wedge 7 constitutes a movable locking .device for detachably securing a head or member 8 to the well tube 9, whereby the reciprocatable parts are anchored within the same.

The lower jar or member 2 is provided with a depending integral combined guide and connecting rod l0, which is squared, and which has its lower end Il threaded for engaging a threaded socket of a coupling member or section l2, that forms a seat fora coiled spring 13.

The head 8, which is slidable on the combined guiding and connecting rod 10, and which iorms a stop or abutment for the spring is provided with a central rectangular opening 14, which ts the combined guiding and connecting rod, whereby the head is held against rotary movement on the said rod. The upper portion of the head 8 is cut away on one side to provide an inclined edge l5, and to form a tapering space between the face or edge l5 and the oil well tube 9 for the reception of the wedge 7, whereby the head is securely wedged within the oil well tube 9. The loop G, which is rigid with the wedge, extends upwardly therefrom, and is bent inwardly, so as to lie against the lower jar or member, when the jars are separated and the head is wedged against the oil well` tube 9, as illustrated in Fig. 2 of the drawings, whereby the loop will be always in position to be engaged by the hook of the upper slidable jar or member, when it is desired to withdraw the apparatus rom the well tube. When it is desired to lift the pumping apparatus from the well tube, the wire line is slackened and the upper jar or member is permitted to fall. In its downward movement, the upper jar or member strikes the head 8 and loosens the same, and at the same time the depending tapered portion or extension 3 presses the loop outwardly away from the lower jar or member until the hook passes below the upper eind of the loop. The loop, which is resilient, then springs into engagement with the hook 5, which holds the wedge above and out of contact with the head 8, and thereby maintains the wedge and the head or member 8 in their unlocked relation and enables the apparatus to be readily lifted from the well tube. In order to enable the wedge and the head 8 to interlock more positively, their engaging faces may be roughened, corrugated, or provided with teeth, to prevent them from accidentally slipping on each other. The head is provided at opposite sides with grooves 16, which form passages for the oil.

The squared portion of the combined connecting and guide rod l0 is of a length approximately three inches in excess of the combined length of the head or member 8 and the coiled spring, which drops below the head, when the line is slackened to withdraw the appar'atus from the well tube. When the pump is in operation, the upper end of the coiled spring bears against the lower end of the head, and when the wire line is di'awn upwardly by the walking beam on the up stroke of the pump, the coiled spring is compressed, and it expands on the down stroke of the pump and actuates the plunger 17 to move the same downwardly within the working barrel oi the pump. By this construction the plunger is continuously reciprocated. The plunger is connected by a sinker 18 with the lower end of the coupling section or member 12, and as the particular construction of the plunger does not constitute a portion of the present invention, a detail description of the same is deemed unnecessary.

The coupling section or member l2, which is pr'o-r vided in its lower end with a threaded socket 19 to receive a threaded projection or portion of the sinker, is provided with an enlarged upper end 20, having a bore or chamber 21, and provided at opposite sides with slots 22, forming entrances and permitting the oil to pass through the enlarged upper end oi the coupling section or member. The upper end of the coupling section or member is counter-bored at 23 to receive the lower threaded end 11 oi the combined guide or connecting rod 10. The upper edge of the coupling secl tion or member 12 forms a seat for the lower' end of the coiled spring 13.

When the apparatus is lowered into the oil tube, the wedge is placed in the tapering space between the upper tapered portion o the headA and the oil tube, and when it is desired to anchor and operate the pump, the line wire is drawn upward causing the wedge to clamp the head within the well tube. When it is desired to withdraw the apparatus, the wire is slackened sufficiently to cause the upper jar or member to loosen the head and hold the wedge out of engagement with the same. The entire apparatus is lowered complete into the well tube, and it is withdrawn therefrom in the same condition, so that 'access may be had to all the Working parts, when the apparatus is pulled out oi the well.

Having thus fully described my invention, what 1 yclaim as new and desire tosecure by Letters Patent, is1- 1. In a pump of the class described, the combination withan abutment or stop, of means for detachably locking the abutment or stop at any point in a well tube or casing, a plunger, lifting mechanism therefor working through the abutment or' stop, and a spring located below the abutment or stop and engaging the same and the plunger, said spring and abutment or stop being removable from the well on the withdrawal of the plunger' and its lifting mechanism.

2. In a pump of the class described, the combination with an abutment or" stop, of means for detachably locking the abutment or stop at any point in a Well tube or casing, a plunger', lifting mechanism therefor working through the abutment or' stop, and a spring located below the abutment or stop and engaging the same and the plunger', said locking means being released by the lifting mechanism, and the said spring and the abutment or' stop being removable from the well on the withdrawal of the plunger and its lifting mechanism.

3. In a pump of the class described, the combination of a plunger, a spring for actuating the plunger on the down stroke, a head or abutment arranged to be engaged by the upper end of the spring for anchoring the same, a locking device for securing the head or abutment at any point within the tube of a well, and lifting mechanism for moving the plunger' upwardly, including upper and lower jars or members, one of the jars or' members' being provided with means for operating the locking device to release the head or abutment,

4. In a pump of the class described, the combination of a plunger, lifting mechanism for moving the plunger' irpwar'dly, a spring for actuating the plunger on the down stroke, and means operable by the lifting mechanism for detachably anchoring the spring at any point in a well tube or' casing, so that the spring will be compressed on the up stroke, said spring being removable with the plunger' and its lifting mechanism,

5, In a pump of the class described, the combination of a plunger', a spring for' actuating the plunger' on the down stroke, a head or abutment arranged to be engaged by the ripper' end of the spr'ng for anchoring the same, a locking device for securing the head or abutment at any point in a welll tube or casing, and lifting mechanism for moving the plunger' upuf'ardly, including upper' and lower' jars or members, the upper' jar or member being provided with means for' oper'ating the locking' device to releasethe head oi' abutment.

6. In a pump of the class described, the combination of a plunger', a spring for actuating the plunger on the down stroke, a head or abutment arranged to be engaged by the ripper' end of the spring, a wedge for clamping the head or abutment against the well tube for anchoring the spring, and lifting mechanism for moving the plunger upwardly, including upper and lower' jars or members, the upper jar or member' beingarranged to str'ike the head and loosen the wedge and then engage the latter in removing the same from the well tribe.

7. In a pump of the class described, the combination of a plunger', a spring for actuating the plunger on the down stroke, a head or abutment for anchoring the spring, a we( ge, for clamping the head or abutment against the well tube at any point, and lifting mechanism for moving the plunger upwardly, including upper' and lower jars or members, the upper' jar or member' being arranged to strike the head to loosen the wedge and provided with a hook for supporting the wedge out of engagement with the head or abutment.

8. In a pump of the class described, the combination of a plunger, a spring for actuating the plunger on the down stroke, a head or abutment arranged to anchor' the spring, a wedge for clamping the head or abutment against the well tube at any point, said wedge being provided with an upwardly projecting loop, and lifting mechanism for moving the plunger upwardly, including upper and lower jars or members, the upper jar or member being provided with means for' engaging the loop of the wedge for supporting the latter above the head.

i). In a pump of the class described, the combination of a plunger', a spr'ing for actuating the plunger' on the down stroke, a head or abutment for anchoring the spring, a wedge for clamping the head or abutment against the well tubeat any point, said wedge being provided with a resilient loop, and lifting mechanism for' moving the plunger' upwardly, including upper' and lower jars or' members, the upper' jar or member being provided with a hook for engaging the loop and having an angularly disposed por'- tion for flexing the loop to cause the same to spring into engagement with the hook.

10. In a pump of the class described, the combination of a plunger, lifting mechanism for' moving the plunger upwardly, including upper' and lower jars or members, the lower' jar or member' being provided with a connecting rod, and means for connecting the rod with the plunger, lsaid means being provided with a seat, a spring disposed on the rod and arranged on the seat for actuating the plunger' on the down stroke, a head or abutment also arranged on the i'od and adapted to be engaged by the spring, a locking device for' anchoring the head or abutment at any point in the well, and means carried by the jars or members for actuating the locking device to release the head or abutment.

il. In a pump of the class described, the combination of a plunger, lifting mechanism for moving the plunger upwardly, including upper and lower jars or members, the lower jar or member being provided with a rod, a spring disposed on the rod, and a coupling member connected with the plunger and with the rod and provided with a seat'for the spring, a head or abutment loosely arranged on the rod and having an angularly disposed face, a wedge for engaging the said face for anchoring the head or abutment at any point in the well, and means carried by the upper jar or member for releasing the head or abutment and for supporting the wedge out of engagement with the same.

12. In a' pump of the class described, the combination with a plunger, of lifting mechanism for moving-the plunger upwardly, including upper and lower jars, the lower jar being provided with a rod, and a coupling member connected with the plunger' and having an enlarged upper end, the latter being provided with a chamber and having a slot communicating therewith, a spring seated on the enlarged end of the coupling member, a head loosely arranged on the rod and engaging the spring, said head being provided with a groove, and means for anchoring the head at any point in the well tube.

13. In a pump of the class described, the combination With a plunger', and lifting mechanism for moving the plunger upwardly, of a spring for actuating the plunger on the down stroke, a head arranged to be engaged by the upper end of the spring, whereby 'the latter will be compressed on the up stroke of the pump, a wedge for clamping the head against the Well tube for anchoring the spring, and means for releasing the head and for holding the wedge out of engagement with the same, to permit the apparatus to be removed from the Well tube.

the down stroke, a head arranged to be engaged by the' upper end of the spring, whereby the latter will be com pressed on the up stroke 01 the pump, a locking device for clamping the head against the well tube for anchoring the spring, and means for moving the plunger upwardly and for releasing the head and,for holding the said device out of engagement with the same to permit the apparatus to be removed from the well tube, said means Vcomprising a pair of movably connected members, one of the members being arranged to strike the head to release the locking device.

15. In a pump of the class described, the combination of a plunger, a spring for actuating the plunger on the down stroke, a head or abutment arranged to be engaged by the upper end of the spring for anchoring the same, a locking device for securing the head or abutment at any point within the tube of a well, and lifting mechanism for moving the plunger upwardly, provided with means for operating the locking device to release the head or abutment.

In testimony, that -I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

' GEORGE F. BELL,

Witnesses Gno. MCCAULLEY, EDGAR P. SALISBURY. 

